"The Public Speaker" , by Karsect Electronics is part of UpRight Enterprises' newest line of wireless microphones. One complete set includes the transmitter pack (battery included), One lapel clip-on microphone, and the powerful KRV-100 receiver with AC/DC converter. As always at UpRight Enterprises, your satisfaction is guaranteed. We stand behind all of our products. This complete set retails for 129.95 !!